Contains essential amino acids: leucine, isoleucine, valine, lysine, threonine, methionine, phenylalanine, histidine, cystine, glycine, proline, serine, arginine, glutamic acid, nicotinic acid and aspartic acid. All amino acids are building materials in protein, and protein is the most directly used material in human tissues. Essential amino acids are amino acids that the human body needs, but they cannot be synthesized by themselves or the synthesis speed cannot meet the needs of the human body. They must be provided by the food protein. Of the 22 amino acids needed by human body, coconut milk contains 16.